Method of treating piling



Oct. 21, 1924.

c. WRIGHT ET AL METHOD OF TREATING FILING 4 Filed May 18 1921 /N 1 5 N TOR CAPL L- WP/GHT. EDWAPO TOAL.

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Patented Oct. 21, 1924.

CARL L. WRIGHT AND TOAL, 0F OAKLAND, CALIFORNIA.

METHOD OF TREATING PILING.

Application filed May 18,

To all whom it may concern:

Be it known that CARL L. WRIGHT and EDWARD TOAL, citizens of the United States, residing at Oakland, in the county of Alameda and State of California, have invented new and useful Improvements in Methods of Treating Piling, of which the following is a specification.

This invention relates to a method of treating piling.

It is a principal object of the present invention to provide a convenient means whereby a protective coating may be placed upon the surface of the piling to prevent the ravages of toredo and other marine insects, having particularly in mind the use of the composition disclosed in our co-pending application entitled Composition for treating piling filed May 18, 1921, Serial Number 470,696.

The present invention contemplates the use of forms adjustable to piling of various diameters, and adapted to confine a liquid or semi-plastic material, around the piling to form acoating of uniform thickness. The invention is illustrated by way of example in the accompanying drawings in which Fig. 1 is a view in elevation showing the application of the form to a piling which has not been driven;

Fig. 2 is an enlarged view in transverse section showing the form and the manner in which reinforcing material is incorporated within the coating;

Fig. 3 is a fragmentary view in elevation showing the application of the present invention to piles which have already been driven.

Referring more particularly to the drawing, 10 indicates a wooden pile around which a coating of protective material ll is ap plied. This is accomplished by the use of collapsible forms 12 which represent segments of a circle and which overlap each other along their contiguous edges. These forms are preferably made of sheet metal and it is desirable that the gauge of e metal be such as to permit the halves of the forms to readily adapt themselves to the contour of the piling and to make a tight joint between each other. l Vhen the coating is applied to the piling before it is driven, the hoppers 13 are provided in the up er side of the form and when the material is applied after the piling is driven a 1921. Serial No. 470,697.

hopper 14 is disposed around the upper marginal edge of the two forms, as shown in Fig. 3. The marginal edges of the outer form section are reinforced by structural members 15. This reinforcing also serves as a suitable mounting for hooks 16 by which the form sections are held in position. These hooks are engaged by chains 17, or other flexible fastenings, which will firmly hold the members in position without allow-' ing separation of the parts during the forming operation. The protective coating is preferably applied in a semi-solid condition and thereafter allowed to set. lit is desirable to embody reinforcing material within this coating so that it will be more permanent after setting and will not chip off when subjected to heavy blows.

This reinforcing comprises a sheet 18 of reticulated or foraminous material. This material is spaced from the outer surface of the pile by the members 19, clearly shown in Fig. 2. These fasteners are formed with a penetratin point 20, a spacing shoulder 21, and a riving and spacing head 22. When the member is driven against the surface of the pile, the shoulder 21 will limit the penetration and will also provide a spacing ledge over which the reinforcing sheet may be placed. The length of the driving head 22 is such as to determine the thickness of .the coating from the reinforcing material to the outer face thereof. The form members 12 are thus supported upon the outer faces of the driving heads. The reinforcing material is prevented from sagging at points between the spacers by nail-shaped supports 23.

Tn applying a protecting coating to a pile it is first desirable to paint the surface of the pile with the protective mixture to be used, thereafter wrapping the pile in tar paper. The members 19 may then be driven in position to hold the tar paper in place and to afford a support for the reinforcing material which is then applied.

The in terior of the forms is then greased and sprinkled with sand, or treated with a solution of lime and water. When this has been done they are placed in overlap-ping relation to each other around the pile and are held in spaced relation to the surface of the pile by the members 19. The chains 17 are then fastened. The protective material is by this time thoroughly mixed and heated. 1

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I being impervious to the attacks of the marine insects.

It will thus be seen that the method'of treating piling here shown embodies the use of simple and inexpensive forms, as well as convenient means for permanently applying a durable coating ofprotective material to the surface of the pile.

While we have shown the preferred form of our invention, it is to be understood that various changes might be made without departing from the spirit of the invention.

Having thus described our invention, what we claim and desire to secure by Letters Patent is:

1. A form for use in applying a coating of material to a pile comprising a pair of substantially semi-circular complementary form units of semi-rigid material; and

means for holding said units around a pile -with their contiguous edges forming an overlapping oin 2. A form for use in applying a coating of material to a ile comprising a pair of substantially semi-circular complementary form unitsv of semi-rigid material; means for holding said units around a pile with of which being of comparatively large area and flat and adapted to abut against the surface into which the point has been driven and to form a ledge spaced from said surface to receive reinforcing'material; and a driving head extending outwardly from said ledge to limit the thickness of material within which the reinforcin is embedded.

4. A method of treating piling which consists in applying a protective coating to the surface of the piling, thereafter wrapping tarred paper around the pile, then arranging reinforcing material around the pile at a spaced distance therefrom, thereafter arranging a form around the pile at a s aced distance from the reinforci materia and thereafter filling the s ace intervening between the form and t e pile with protective material.

CARL L. WRIGHT. EDWARD TOAL. 

